Durable ABS plastic boxes with cork lining. Close securely with a rust-resistant, Nickel-plated Clasp and pin hinges. Slide boxes are perfect for storage or transportation of 100 standard 1 x 3 in. (25 x 75 mm) slides. Molded, rigid boxes securely hold slides in grooved slots. Both the lining and the slots are numbered to correspond to the slide inventory sheet. Dimensions (L x W x H): 8.75 x 6.75 x 1.3 in.